Valve and valve-casing.



. V c; G.l amino.

vVALVE AND VALVE msnm.

APPLICATION num oc'r. 6. 1911s.

Hamm-:SHEET l.' I

Tosvsnnos ECCENTRIC n. f M p Dx .3 1w a, n/ S.0v v 1 r m0, MEM AVO *I* RLm PAL svn a, ai E .Nn o GAM l o z/J c P I, LH l UNITED STATES i?.lv'rnivr CARL G. SPRADO, OF MILWAUKEE, WISCONSIN, AssiGNoR 'ro ALLis-Cmiiiiinnsooiirlin,

F MILWAUKEE, WIscONsIN, A CORPORATION l0F NEW .IERSEY.""

To al@ 'whom it may concern:

' Be it known that I, CARL or. SPRADO, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of VALVE mm vanvE-casmm.

v Specification of Letters Patent. Application filed. October 6, -1906. Serial No. v337,712.A v

Wisconsin, have invented certain new anduseful Improvements in Valves and Valve- Casings, of'vwhich the following is a speciiifvza-v tion.

This invention relates to a structure of valve -casing l'and lvalves especially adapted for use in connection with gas engines but the use of which is not necessarily limited to gas en -nes. a I

he invention relates to certain specific structural arrangements of the several parts of the valve casingand valves to be hereinafter specifically described in the specication and claimed.

vIn the construction heretofore of gas en- 2'0 gines it has been customary, especially in engines ofthe larger sizes, t'oform the valve as a part of the cylinder structure, or in large sections to be attached to the cylinder structure, with the result that when the engine was assembled if it became necessary -or desirable to disassemble the valve strueture, it. became necessary to disassemble practically the entire engine. In using certain kinds of'gases' to form an explosive mixture for the operation of the gas engine, it is found desirable, andin some cases absolutely necessary, to overhaul the valve casings, valves and gas passages adj acent thereto in order` to remove deposits of V tar, etc. which have accumulated.

The urpose of this invention is to. provide a simple and efficient valve structure and surroundin casing which can be readilyr disassembled 4 y the removal of a few comparatively light parts affording access to the interior of the casing, and further providing that no adjustments of the valve mechanism need be disturbed so that when the parts are l reassembled and the driving rods for the mechanism'ztre pinned to their respective levers, the whole mechanism will be 1n exactly the same adjustment as it was before the parts were disassembled.

On the drawings which form a part of this specification' and on which the same reference characters are used to indicate the saine elements Wherever they apjpear in the several l Patentes an elevation in transverse' sect iixof'a tion of` a gasengine cylinder withfa'valve -cas- 55l i ing Vand .valve mechanism secured thereto.

Fig. Z is a longitudinal" verticaiQsection through 'a portion of tli'e cylinder' andgtha valve casing, the upper` 'art of"tliehcc'iglor:i

bonnet being shown in e ,evatio`n"."- i

Referring to Fig. 1 of the drawing; the

erence characterl represents the cylinderlof a gas engine upon the top 'of which is securedfk by bolts or otherwise, a valve casing 2,",which`1 elongated in the (mation 'of the length of s the cylinder, as clearly shown by Figl'2, and

is provided with an interior partition 3,'which provides in the interior thereof aiiair passage fi, and agas'passa e 5, the said passages be-`' ing provided with inlets 6 and 7 res ectivelV 70 which are adapted to be connectecilwith air supply pipe and gas. sup ily'vl pipe respectively. Ordinarily two of tiliese valve casings will be used situated one at each end of the cylinder, this being the common practice with four cycle, double acting gas engines, though of course asingle casing could be. at one end of the 'cylinder for a'single acting e engine. l The cylinder is provided with an inlet pas- 8D sage 8 and in line with this passage, the top, bottom and partition of the valve casing are similarly provided with a ertures, these aper-Y tures, however, being slig tly larger than the" size of the inlet passage 8 where it emerges 85 through the outer surface of the cylinder.

Seated concentric. with the: 'assage `8v is .Y the valve seat 9 which is secure by bolts or otherwise against the exterirzof the cy lindr,` and in the construction ,shown this lvalve 90 seat rojects into the inleLpassage; 8 and atfor s a seat for a valve on the lower surface thereof. Preferably formed'integraily L Awith this ring 9 are spider arms 10, which in v l turn are united with the-guide or core 11, '95 which guide extends upwardly beyond the upper surface of the valve 'casing2.

guide is a erturcd to receive tl'iexvalve steril`` 12 of the inlet valve 13, and is provided-with Y a bushing 14. Surrounding the valve stem Y and located within the aperture of the guide,

is a s iral spring 15, the purpose of whiclris to or inarily retain the valve 13'against its seat-.on the ring 9. The valve stern 12 is provided -witli ta threaded portjion 16 lupon 105 which a threaded nut 17 isadaptedftorhe 15 plate 21 which contracts the opening through the nut 17 in orderto remove the valve stem Located in the up erpart of the guide 11 are screws 20 whic project through said guide and extend-into t ie recess therein to a suflicient extent to be engaged by the collar .19, the purpose of these-screws being to retain the spring 15-within the aperture o f the guide 11 1f it becomes desirable to remove 12and valve 13 from said-guide.

Seated u on thepartltion 31s an annular partition 3, said opening being large-enough to admitv of the ring 9 being removed there through. This plate is provided with a dcpending cylinder 22 which is apertured 'so that air may readily pass from the air passage 4 to the' annular nnxingi `pace 23. provided 1n with respect to said guide so as to the interior of said cy nder 22. The aper- 'tures 24 provided in said cylinder are intended to allow the air to pass into the interior of said cylinder in se arate streams so as to more readilf ming e with the gas which is also allowe to pass into the interior of said cylinder. This plate 21 is properly lnted or packed at the points where it contacts with the partition 3 and is provided with a central aperture '25 which is adapted to receive 'the gas valve 26.

The plate 21 and cylinder 22 depending therefrom are also pliovided with projecting ins or blades 27, w. 'ch carry a ring 28 surrounding the guide 11 and properly acked e gas tight, sald ring affording a seat for the lower Y casing 2 by lonte end of th valve as clearly shown by the drawings.

Secured u on the o en face of the valve olts or ot erwise, is the bonnet 100. This bonnet is provided with'the plate 101 which forms a closure for the openingin the to of the valve casin and projecting from t e lower side of said p ate is the grate c linder102 which is adapted to rest upon t e late'21 and-retain said plate 21 seated artition 3. The plate 1 01 is 'also provide with an aperture 103, through which the guide 11 projects, the two'being provided with a gas tight luting between them. The reference character 104 represents a ide which is preerablyformed integral with the bonnet 100 and is apertured to receive the head 105 secured by screw threaded engagement with'the upper end-of the valve 201. The

said lever-by the pin 111 and .strapped about'v I the lay shaft eccentric; the motion transf' "mititing parts not being-shown.

The gas valve 2" is secured torods 200.

which project through apertures provided in the platell, and, as ordinarily the gas. pressure is' not great, it 1s found suiclent to s pac-k them with s. litt-le oil, though if the gas used should be under any considerable pres f spre, suitable stating boxes should. be rovided 1n the apertures 1n said plate- T xese rods are composed of separate sections united by sleeve members 201, and upon each rod ls secured a collar 2in-2, between which collar,

and lugs 4120 upon the bonnet ars-. retained spiral springs 203, which springs normally keep the vas valve closed upon its seat.' The upper en s of these rods are secured to a yoke member 204 which slidably engages a guide 1.21 formed preferably as a part'of the bonnet, Pivoted to this yoke member by pin 205 is a rocker 20, which is pivoted by pin 207 to a connecting rod'208 which is con, nected at its other end to the pin '1 11. rocker 206 is adapted to rock upon an arm 209 of a three-arn1ed lever 210 which is pivoted to the bonnet on opposite sides ol' the voke 204 see dotted lines, Eig. 1, the

This.

onteiend of the lever being pivote by pin 211 to t-he connecting rod 212, which in turn is connected with the governor, not shown.

This valve mechanism operates es follows:

Connecting rod 110 receives motion from some moving part of the engine and rocks the rocker 109 up anddown on the lever 107 thereby opening 'the admission valve 13 and permitting said valve to be closed by the spring 15. 'At the same time the rocker 206 is roc ed upon the lever 209 because of the connecting rod 20S, whereby the was valve 26 is opened and is permitted to be closed by the springs 203. y A

1f now it becomes necessary 'or desirable to dismantle the valve mechanism to inspect or clean the parts, it is only necesry to withdraw pins 111 and 211 and swing the connecting rods 110 and 212 to one side. The bolts or other securing means Whirhsecure vthe bonnet Q) the top of the valve casing 2 are then removed and the bonnet with the plate 101 and cylindrical projection 102 are lifted off bodily, the aperture in plate 101 being sufficiently isrge to pass over the head '105 on top of the valve stem 12- The gas valve 26 will also be removed with the bonnet, unless the rods 200 have been separated into their sections by manipulating the sleeves late 21 may now be. removed bodily with its downwardly pro'ecting cylinder' 22, fins 27 and'ring 2S. T e dismantling would ordinarily be completed at this point, as the. inlet passage 8 could beinspected by Vushing'the valve 13 downwardly,

which Wou d also give an opportunity to xno spect and clean the valve seat and valve.

Should it become necessary or desirable, however, topremove the ring 9 and valve 13, the head 105 and nut 1T will be removed from the upper end of the valve stem and the valve may be allowed to 'drop vthrough the guide 11, and with the inlet passage 8 proportioned as shown, the valve would be re'- tained in said passage. The bolts securing the ring 9 being removed, said ring and the guideattached thereto with s )ring 15 and collar 19 can be readilyremove through the apertures in the artltion 3 and the top of the. casing 2. Tie valve 13l can then be picked out and the valve structure has been completelv disassembled.- Ordinarily the valve 13,'head 1 05, nut 17, ring- 9 and guide 11 will all beremoved together as a'unit instead of separating the parts as just stated.

in reassembling, the parts will be replaced in the inverse order to that-,in which they were disassembled, and then by simplv replacing pins 111 and 211 'the'reassem ling will be completed, the whole-operation of l. disassemblin and reassembling having been 2.5'

accomplishe without necessitating disturbing a single adjustment. This feature is of special importance as the WorkI can be intrsted to an ordinary laborer without necessitatin the presence of an'expert engineer to rea just the engine'and get it in working What I claim isf- 1. The combination with a cylinder pro-- vided with a port of a member provided witl anaperture which is smaller than said port. said member being secured to said cylinder with its aperture in alinement with said port, a valve seating upon said member, a valve casing securcd'to said cylinder and provided with .a partitionin the interior thereof to provide separate air and gas passages in said casing, the casing and its partition being provided with apertures, said apertures being larger than saidv member to permit said member to`be withdrawn the-etluough, a valve controlling the thoroughfare through the aperture of said partition, a-bonnet secured to said casing and closing one of the apertures therein, both of said valves being provided with stems extending into said v onnet, and means for operatmg said valves.

42. The combmation with a cjvhnder providedwith a port of'a memberrovided with an aperture which is smaller t an said port, said member being securedto said cylinder with its aperture in alinement with said port, a valve seating upon said member, a valvecasing secured Vt'o said cylinder and yprovided with a partition in the interior sages in said casing; the casing and its parti-- thereof to provide separate air and gas pasfare contracting vthe aperture through`said.\

partition, a valve controlling the thoroughlfare through said plate, a bonnet secured to said casing and closing an'a-perture therein, bot-h of said valves being provided with stems extending into saidv bonnet.

3. T he combination with vided with a port of a member rovided with an aperture 'which is smaller t ian said port, said member being secured to` said cylinder with its aperture in alinement with said port, a valve 4seating upon said member, a valve casing secured to said cylinder and provided with a partition in the interior thereof t provide separate air and gas Apassages in said casing, t-he casing and its partition being a cylinder prorovided with apertures, said apertures being i arger than said member to permit said member'to be withdrawn therethrough, a plate' 4. In combination with a gas engine cy inder a valve cylinder provided mth apertures through which air may pass to the interior of said valve cylinder, one end` of said valve cylinderlbeing oper; to the gas engine cylinder, a core extending into the valve cylinder forming an annular mixing chamber within the valve cylinder and an annular port at the other end of the valve cylinder through which gas may pass to the annular mixing chamber, and a valve controlling the ort. .p 5.' The combination with an engine cylinder of a valve casing rovided with aper- .tures, means for partial v closing said apertures, valves located within said casing' and,v provided with stems which project through said casing to the outside thereof, said valves and the means for partially closing the apertures in 4said casing being so constructed. and arranged with respect to said casing that they are removable from the cylinder independently from the casing.

In testimony whereof, I aHix my signature in the presence of two witnesses.

. CARL G. SPRADO.

Witnesses:

vGr. F, DEWEIN,

' FRANK' E. DEN-Narr. 

